in my view this is good for the Crypto-currency world. Most scam projects coming by advertisements , so the people caught . after the ban definitely the users willing to go Ranked websites. As an example if you want to invest ICO , definitely now you check with a Ranked websites like ICO bench , ICO drops etc.
NOw filtered the scams, anyway this is good action. this ban means they indirectly supporting the Crypto currency future
This is a good action made by Google and Facebook since majority of ICO are scam. Now only a few good ICO will survive because if they are really a good coin they will pursue and prove to the community that their ICO is not a scam and will provide good service in the community.